3. Preening helps them stay dry. Preening is the process by which ducks groom themselves to get rid of dust, dirt, and ...

The reason lies in an intraspecific battle being fought within the host species: the parasite is simply caught in the crossfire. The black-headed duck Heteronetta atricapilla, a little-known South ...

parasites fail with certain hosts because they ... study where male facultative interspecific brood parasitic ducks mistakenly courted females of the host species instead of their own (Sorenson ...